<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        body{
            background-color: blue;
        }
        .box1{
            margin: 80px;
            width: 300px;
            height: 80px;
            text-align: center;
            line-height: 80px;
            border: 1px solid #eee;
            border-radius: 3px;
        }
        .box1:hover{
            box-shadow: 0 0 5px #0000cc;
        }
        p{
            width: 400px;
            height: 400px;
            background-color: white;
            margin: 200px;
            
            border-radius: 100%;
            /* text-shadow: 0 0 3px #ff0000; */
            box-shadow: 0px 0px 100px 60px yellow inset;
        }
    </style>
</head>
<body>
    <!-- <div class="box1">悬停阴影效果</div> -->
    <p></p>
</body>
</html>